Fourth-order tri-band bandpass filter using square ring loaded resonators.

Authors :: Chen, J.-Z.
Wang, N.
He, Y.
Liang, C.-H.
Source :: Electronics Letters (Institution of Engineering & Technology). 7/21/2011, Vol. 47 Issue 15, p858-859. 2p.
Publication Year :: 2011
Abstract: A tri-band bandpass filter (BPF) using a novel square ring loaded resonator (SRLR) is presented. The SRLR can generate a tri-band response by tuning its geometric parameters. Moreover, it can build the high-order tri-band BPFs using the proposed resonators because of the sufficient coupling between adjacent resonators. A fourth-order Chebyshev tri-band BPF centred at 2.4, 3.5 and 5.2 GHz is designed and fabricated. Measurement results agree well with the full-wave EM simulated results. [ABSTRACT FROM AUTHOR]